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发明名称
DRILLING AID
摘要
申请公布号
EP0117527(A3)
申请公布日期
1986.04.02
申请号
EP19840101872
申请日期
1984.02.22
申请人
BECHER, REINHARD
发明人
BECHER, REINHARD
分类号
B23B45/14;B23B47/28;B25H1/00;(IPC1-7):B25H1/00;B23B49/02
主分类号
B23B45/14
代理机构
代理人
主权项
地址
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